Any way to get Karma refund if you buy wrong item?

I am so kicking myself....I had just dinged 22, and went to buy some new leg armor in Kessex Hills....I thought I was on the right armor type, hit buy....then coudn't equip...looked, and it was light armor (I am playing a Ranger)...did not see a refund button or could sell it back...argh. Don't see an ingame request for GM help either....